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| Number | Title | Issue Date |
| 7794593 | Cross-flow membrane module Liquid-liquid extraction elements are described. A liquid-liquid extraction element includes a first layer pair and a second layer pair disposed adjacent the first layer pair forming a stack of layers. The first layer pair includes a first polymeric microporous memb... | 09/14/2010 |
| 7320721 | Chemical filter and fan filter unit having the same In a fan filter unit for filtering and continuously supplying clean air into a clean room, the fan filter unit includes a chemical filter for removing chemical contaminants contained in the air, a fan for sucking and blowing out the air, and a particle filter for re... | 01/22/2008 |
| 7297255 | Mass or energy transfer cartridge and module A mass transfer or energy transfer module is provided which includes a manifold, a cartridge and a bowl which houses the cartridge. The cartridge and bowl are connected to each other at least two flanges which fit into slots of the bowl to form a unitary constructio... | 11/20/2007 |
| 7258059 | Pressure mediator with separating membrane and method for the production thereof pressure mediator comprising a base body having a membrane bed, wherein said base body has a first material with a first thermal expansion coefficient, in addition to a separating membrane having a second material with a second thermal expansion coefficient that is ... | 08/21/2007 |
| 7217364 | Filtering device and a filtering device housing A filter device has a housing in the shape of a tubular section, with at least two chambers separated from one another by membranes, and with at least one connection for each flow chamber. The device has two filter caps, with one of each of the filter caps being loc... | 05/15/2007 |
| 7195122 | Filters A filter comprising a filter cartridge and a housing having at least one fitting and defining a chamber, the filter cartridge being disposed in the chamber, wherein the housing includes a fluid conduit which extends axially from the fitting along the periphery of th... | 03/27/2007 |
| 7189322 | Charged membrane The present invention provides a hydrophilic charged microporous membrane comprising a porous hydrophobic substrate and a coating comprising a charge-providing agent. The present invention further provides a hydrophilic charged membrane comprising a porous hydrophob... | 03/13/2007 |
| 7153424 | Apparatus for purifying water An apparatus for purifying water, that includes a frame, in connection with which is arranged a primary space for water to be filtered, secondary space for filtered water and a filter. The filter is arranged to filter water, that is driven by gravity from the primar... | 12/26/2006 |
| 7132049 | Negatively charged membrane The present invention provides, in certain embodiments, a negatively charged microporous membrane comprising a porous substrate and a crosslinked coating having fixed negative charges. The crosslinked coating can be prepared, e.g., from a polymerized composition com... | 11/07/2006 |
| 7108791 | High-resolution virus removal methodology and filtration capsule useful therefor The present invention provides a high-resolution membrane-based method for removing a virus from a manufactured protein-containing solution, the method being particularly characterized by its capacity to be performed quickly (i.e., as measured by flux) and efficient... | 09/19/2006 |
| 7052532 | High temperature nanofilter, system and method A filter, system and method is provided for filtering nanoparticles in a hot gas, namely particles about 200° C. and further particularly >about 450° C. including diesel exhaust. The filter includes filter media material composed of fibro... | 05/30/2006 |
| 6902671 | Chemical process system with multi-functional barrier filter A barrier filter useful for aseptically discharging both gaseous and liquid fluids from a chemical process system is disclosed The barrier filter comprises, within a common enclosure, one or several filter membranes having singularly or collectively a mixture or hyd... | 06/07/2005 |
| 6565749 | Microorganism filter and method for removing microorganism from water A filter for removing microorganisms from a fluid is provided by the invention. The filter includes a substrate having a reactive surface, and a polymer covalently bonded to the reactive surface of the substrate. The polymer includes a plurality of cation... | 05/20/2003 |
| 6511599 | Multi-element cylindrical filter with equalized flow A filter filters fluid flowing along an axial flow direction and includes a plurality of concentric cylindrical pleated filter elements having a common axis. A plurality of annular radial gaps between filter elements provide additional flow axially throug... | 01/28/2003 |
| 6224767 | Fluid separation element assembly A fluid separation element assembly comprises a fluid separation element having a membrane unit and a wrapping material formed around the membrane unit, an anti-telescoping plate attached to at least one end of the fluid separation element at a condition ... | 05/01/2001 |
| 6103119 | Filter cartridges having track etched membranes and methods of making same A filter cartridge that includes a track etched membrane sealed therein in a leak-free manner, and a method for making the cartridge. The filter cartridge has a bubble point that is at least 50% of the bubble point of the track etched membrane. In one emb... | 08/15/2000 |
| 5988400 | Pourous fluorocarbon membrane, method for producing thereof and cartridge filter based on said membrane A porous fluorocarbon membrane has a porous support completely impregnated with tetrafluoroethylene/vinylidene fluoride copolymer. There is a process for producing this membrane by impregnating a porous support with a copolymer solution in a readily-boili... | 11/23/1999 |
| 5904846 | Filter cartridge having track etched membranes and methods of making same A filter cartridge that includes a track etched membrane sealed therein in a leak-free manner, and a method for making the cartridge. The filter cartridge has a bubble point that is at least 50% of the bubble point of the track etched membrane. In one emb... | 05/18/1999 |
| 5470531 | Exchanger and method for manufacturing the same An exchanger for oxygenating blood includes a casing having walls and a cavity, sheet material with first and second ends covering distal edges of the walls, and a cover extending over the cavity to sandwich the first and second ends of the sheet material... | 11/28/1995 |
| 5468449 | Exchanger and method for manufacturing the same A method for manufacturing an exchanger includes the steps of folding sheet material in a series of pleats, placing the folded sheet material in a casing having an opening defined by walls with distal edges, covering the distal edges with end portions of ... | 11/21/1995 |
| 5203998 | Permanent backwashable filter structure A liquid-cleaning filtering system with distillation capability has twin permanent filter assemblies, each utilizing a wire mesh filter cartridge which is backwashed using an internal sprayer nozzle assembly. During the normal operation of the filter cart... | 04/20/1993 |
| 4902418 | Element having a porous wall The element is disposed in a vessel receiving a fluid flow. The vessel wall is porous at least for a proportion of the fluid and bounds an inner chamber communicating through the vessel wall with a chamber outside the vessel. The element is in the shape o... | 02/20/1990 |
| 4786411 | Fluid treatment apparatus with semi-permeable membranes The invention relates to an apparatus comprising a stack of plates having plates of a type A and a type B alternating. Each plate has exposed channels and a semi-permeable membrane 1 turned over one of its edges 2. The membranes extend into the exposed ch... | 11/22/1988 |
| 4617119 | Blood exchange apparatus The present blood exchange device comprises a plurality of membrane film layers formed by folding a continuous band of a suitable membrane film into a plurality of continuous folds and by inserting sealing masks around the edges of the folds. Apertures ar... | 10/14/1986 |
| 4617115 | Artificial kidney with disposable dialysis liquid circuit An artificial kidney comprising a haemodialyser connected to a dialysis liquid circuit has the dialysis liquid circuit designed and simplified so as to be entirely disposable. Preferably, the haemodialyser and also all the circuits for the blood, for the ... | 10/14/1986 |
| 4556489 | Membrane oxygenator A novel device for mass transfer across a membrane is disclosed, which is particularly suitable for use as a blood oxygenator. The novel device is of the type having a pleated, selectively permeable membrane defining first and second sets of alternating p... | 12/03/1985 |
| 4500426 | Semipermeable membrane elements A semipermeable membrane element of the type incorporating a flat semipermeable membrane and useful as an artificial kidney. A wave-shaped spacer is provided in intimate contact with the active side of the membrane and forms a multiplicity of parallel cha... | 02/19/1985 |
| 4455230 | Pleated membrane transfer device utilizing potting and thixotropic adhesive Potting the spaced-apart fold edges of a pleated membrane and spacer stack to the interior of a housing without blocking the fluid passages between the spaced-apart pleats by applying a layer of thixotropic adhesive to the fold edges of the pleated membra... | 06/19/1984 |
| 4451370 | Membrane separation element The present invention provides a membrane separation element comprising a pair of corrugated semipermeable membranes each defining a plurality of parallel passages for the fluid to be treated on active surface side thereof, and a plurality of parallel pas... | 05/29/1984 |
| 4447326 | Device for the diffusion of substances between two fluids via semipermeable membranes A device for the diffusion of substances between fluids through semi-permeable membranes is disclosed. The device includes a stack of longitudinally extending spacer plates alternating between the folds of a folded semi-permeable membrane in which channel... | 05/08/1984 |
| 4437990 | Semipermeable membrane mass transfer apparatus having slotted support members A mass transfer apparatus for use in hemodialysis and ultrafiltration wherein a semi-permeable membrane is folded to form a stack of accordion pleats and is arranged within a ported housing to form two separate fluid chambers for blood and dialysate. A pl... | 03/20/1984 |
| 4431539 | Semipermeable membrane mass transfer apparatus and method for making same The present invention relates to mass transfer apparatus e.g., artificial kidney in which a semipermeable membrane is folded or pleated between top and bottom rectangular plates. Support members are disposed within each pleat on one side only of the membr... | 02/14/1984 |
| 4419237 | Pleated kidney This disclosure relates to a dialyzer primarily intended to be utilized as an artificial kidney and includes a plurality of blood and bath plates stacked in alternating relation with there being a membrane between adjacent plates. The membrane is preferab... | 12/06/1983 |
| 4310416 | Plate type fluid treatment apparatus A small-sized plate type fluid treatment apparatus for filtration and separation of fluid, transferring substances between fluids through membranes or passing specific substances contained in the fluid through membranes. Said apparatus consists of a plura... | 01/12/1982 |
| 4304669 | Device for the mass transfer between fluids A device for mass transfer between fluids through a diaphragm unit comprising a pair of diaphragms with a diaphragm support therebetween, in which the diaphragm unit is a pleated package supported in a case, with the pleats and support defining a pluralit... | 12/08/1981 |
| 4282099 | Integral partitioned hemodialysis unit A hemodialysis unit has an integral partition disposed across the length and width of the interior of the dialysate chamber separating the dialysate chamber into two subchambers. The first of the two dialysate subchambers has a blood perfusion unit floor ... | 08/04/1981 |
| 4272373 | Apparatus for the transfer of substances between two fluids with simultaneous tempering of at least one of the fluids Apparatus for the transfer of substances between two fluids with the simultaneous tempering of at least one of the fluids. The apparatus includes at least one heat permeable membrane having first and second opposing surfaces for the transfer of heat there... | 06/09/1981 |
| 4267044 | Thixotropic polyurethane compositions as sealants for membrane separatory devices Novel thixotropic polyurethane compositions particularly useful as sealants for the edges of folded membrane separatory devices are provided which comprise; (a) a prepolymer comprising the reaction product of a polyol having a hydroxyl functionality of at... | 05/12/1981 |
| 4246121 | Fluid flow transfer device with formed-in-place manifold gasket and method of making same A fluid flow transfer device having a pleated membrane bonded at its tips to the interior of a housing and a method of making the same wherein a fluid manifold is provided by forming a channel portion in the housing interior, applying a gasket material ar... | 01/20/1981 |
| 4239625 | Potting pleated membrane The tips of a pleated membrane are bonded to the interior of the housing of a fluid flow transfer apparatus by positioning support spacers in the membrane folds on the membrane side opposite the side to be bonded, closing the entrances to the spaces betwe... | 12/16/1980 |
